Well, I saw this first on Llamabutchers, but TexasBestGrok beat me to the link. I have more books in common with him anyway.
1. Roger Zelazney
2. David Brin [He has started a blog here. Sort of.]
3. Dan Savage
4. Robert Heinlein
5. CS Lewis
6. JRR Tolkien
7. William Gibson
8. Larry Niven
9. Diane Duane
10. William Shakespeare
Update: sorry, I screwed up and bolded the ones in common instead of the ones I added. Also, the meme from The Cheese Stands Alone is much more congruent:
1. J.K. Rowling
2. William Gibson
3. Neil Gaiman
4. David Brin
5. Roger Zelazny
6. JRR Tolkien
7. Stephen Brust
8. Dave Barry
9. Stephen King
10. William Shakespeare
So, bold names are the added ones.